NOTE: One user has reported that the Focus Peaking and MF Assist (punch-in) features, both of which they had programmed into Fn buttons, ceased working after the update until they toggled them off and back on INTHEMENUSYSTEM. If any features aren't working after the update, navigate to them in the menu system and toggle them off/on. Please comment below if you find this on your camera(s).

For instructions on how to update the firmware, check out this video from the November 2019 update. The procedure is the same (and if you never updated in November, you can install the new update to get everything included in previous updates).